[填空题]
The Moon orbits the Earth such that the same side aesuqdxz3rlcr6./ s04t 1,cid5.qi7wntah/ xlways faces thew3 a./drn3z nd Earth. Determine 3n./3 dwdz rnathe ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$